How to choose a Asus PA-1900-36 laptop ac adapter
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Before you buy Asus PA-1900-36 AC laptop adapter, please make sure the AC laptop adapter will give you the correct voltage and suitable current output. To find out the voltage¤t, turn your laptop over and look for a label, sticker or writing which shows the voltage and current, it should look something like the examples below.
Determine the desired output specifications of the Asus PA-1900-36 AC adapter. This can usually be found on the old adapter, the electronic device, or the instruction manual of the electronic device.There are two components to this:the voltage,measured in volts, and the current, usually measured in milliamps.When selecting an adapter, you will want to match these as closely as possible.
Determine whether the adapter should be regulated or unregulated.Simply put, an unregulated adapter does not always produce the rated voltage while a regulated adapter does.Because of this,regulated laptop AC adapters are also generally more expensive than unregulated ones.
Determine the polarity of the adapter, which will either be positive or negative. The following image shows how polarity is usually represented.
Determine the size of the adapter plug.Plug sizes are normally measured in millimeters.
Choose an Asus PA-1900-36 adapter that meets all of the above four requirements: proper output voltage and current, regulated voltage if required, proper plug size, and proper polarity.
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